20217856

素因数分解:

$2^{15}\times {\mathrm{617}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 40500630

約数和(自身を除く): 20282774

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 617, 1024, 1234, 2048, 2468, 4096, 4936, 8192, 9872, 16384, 19744, 32768, 39488, 78976, 157952, 315904, 631808, 1263616, 2527232, 5054464, 10108928, 20217856]

約数ペア:

[(1, 20217856), (2, 10108928), (4, 5054464), (8, 2527232), (16, 1263616), (32, 631808), (64, 315904), (128, 157952), (256, 78976), (512, 39488), (617, 32768), (1024, 19744), (1234, 16384), (2048, 9872), (2468, 8192), (4096, 4936)]